Acknowledgements

We thank the Brazilian authorities for permits: ICMBio (registration number 48185-2) and IBAMA (registration number 127341). We thank Francisco Diniz for early comments on the manuscript and Rhian Smith for improving the English. We acknowledge funding from the Alexander von Humboldt Foundation and CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico - Brazil: 249064/2013-8) to C.D.R.; the Deutsche Forschungsgemeinschaft (#DU1319/5-1) to M.D.; the Swedish Research Council, Swedish Foundation for Strategic Research, the Knut and Alice Wallenberg Foundation and the Royal Botanic Gardens, Kew to A.A.